近 一个项目.net 要调用JAVA的WEB SERVICE，数据采用3DES加密，涉及到两种语言3DES一致性的问题，
下面分享一下， 这里的KEY采用Base64编码，便用分发，因为Java的Byte范围为-128至127，c#的Byte范围是0-255 核心是确定Mode和Padding，关于这两个的意思可以搜索3DES算法相关文章 一个是 C#采用 CBC Mode，PKCS7 Padding,Java采用CBC Mode，PKCS5Padding Padding, 另一个是C#采用ECB Mode，PKCS7 Padding,Java采用ECB Mode，PKCS5Padding Padding, 注意：Java的ECB模式不需要IV 对字符加密时，双方采用的都是UTF-8编码 下面是C#代码Des3Encrypt加密解密#region Des3Encrypt加密解密 ///Des3Encrypt加密解密 /// /// public class Des3Encrypt { #region 一点小注释 //注意，如果是在C#端自己加密，自己解密的时候，会发现一个补\0的问题，例如 原文是 abcde ，加密之后，再解密变成了 abcde\0\0\0 // //这里的\0的次数，是看你的原文和8相差多少，如果不够8位就补几次。原文是abcde是5位，则会自动补齐\0 要补3次 // //如果是c#端加密，发给java解密，则不会有问题，不会存在\0的问题 // //如果是java端加密，发给c#解密，则还是会在结尾自动补\0 //我们需要人为的replace替换掉\0 #endregion #region CBC模式加密解密 ///DES3 CBC模式加密 /// /// /// 密钥 /// IV /// 明文的byte数组 ///密文的byte数组 public static byte[] Des3EncodeCBC(byte[] key, byte[] iv, byte[] data) { //复制于MSDN try { // Create a MemoryStream. MemoryStream mStream = new MemoryStream(); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.CBC; //默认值 tdsp.Padding = PaddingMode.PKCS7; //默认值 // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream cStream = new CryptoStream(mStream, tdsp.CreateEncryptor(key, iv), CryptoStreamMode.Write); // Write the byte array to the crypto stream and flush it. cStream.Write(data, 0, data.Length); cStream.FlushFinalBlock(); // Get an array of bytes from the // MemoryStream that holds the // encrypted data. byte[] ret = mStream.ToArray(); // Close the streams. cStream.Close(); mStream.Close(); // Return the encrypted buffer. return ret; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } ////// DES3 CBC模式解密 /// /// 密钥 /// IV /// 密文的byte数组 ///明文的byte数组 public static byte[] Des3DecodeCBC(byte[] key, byte[] iv, byte[] data) { try { // Create a new MemoryStream using the passed // array of encrypted data. MemoryStream msDecrypt = new MemoryStream(data); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.CBC; tdsp.Padding = PaddingMode.PKCS7; // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream csDecrypt = new CryptoStream(msDecrypt, tdsp.CreateDecryptor(key, iv), CryptoStreamMode.Read); // Create buffer to hold the decrypted data. byte[] fromEncrypt = new byte[data.Length]; // Read the decrypted data out of the crypto stream // and place it into the temporary buffer. csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length); //Convert the buffer into a string and return it. return fromEncrypt; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } #endregion #region ECB模式加密解密 ////// DES3 ECB模式加密(不需要IV，可以传null) /// /// 密钥 /// IV(当模式为ECB时，IV无用) /// 明文的byte数组 ///密文的byte数组 public static byte[] Des3EncodeECB(byte[] key, byte[] iv, byte[] data) { try { // Create a MemoryStream. MemoryStream mStream = new MemoryStream(); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.ECB; tdsp.Padding = PaddingMode.PKCS7; // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream cStream = new CryptoStream(mStream, tdsp.CreateEncryptor(key, iv), CryptoStreamMode.Write); // Write the byte array to the crypto stream and flush it. cStream.Write(data, 0, data.Length); cStream.FlushFinalBlock(); // Get an array of bytes from the // MemoryStream that holds the // encrypted data. byte[] ret = mStream.ToArray(); // Close the streams. cStream.Close(); mStream.Close(); // Return the encrypted buffer. return ret; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } ////// DES3 ECB模式解密 /// /// 密钥 /// IV(当模式为ECB时，IV无用) /// 密文的byte数组 ///明文的byte数组 public static byte[] Des3DecodeECB(byte[] key, byte[] iv, byte[] data) { try { // Create a new MemoryStream using the passed // array of encrypted data. MemoryStream msDecrypt = new MemoryStream(data); TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider(); tdsp.Mode = CipherMode.ECB; tdsp.Padding = PaddingMode.PKCS7; // Create a CryptoStream using the MemoryStream // and the passed key and initialization vector (IV). CryptoStream csDecrypt = new CryptoStream(msDecrypt, tdsp.CreateDecryptor(key, iv), CryptoStreamMode.Read); // Create buffer to hold the decrypted data. byte[] fromEncrypt = new byte[data.Length]; // Read the decrypted data out of the crypto stream // and place it into the temporary buffer. csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length); //Convert the buffer into a string and return it. return fromEncrypt; } catch (CryptographicException e) { Console.WriteLine("A Cryptographic error occurred: {0}", e.Message); return null; } } #endregion #region ECB模式加密(key已经设置好) ///ECB模式加密(key已经设置好) /// /// /// 输入需要加密的字符 ///public static string EncodeECB(string old) { string keyWord = "youjiao2013_fromc#tojava"; return EncodeECB(old, keyWord); } #endregion #region 自己设置KeyWord,注意key必须是24位的,不然java那边加密会显示长度不够 public static string EncodeECB(string old, string keyWord) { Encoding utf8 = Encoding.UTF8; byte[] key = utf8.GetBytes(keyWord); //加密的密钥 //---- 加密 string str1 = old; //准备要加密的原文 byte[] byte1 = utf8.GetBytes(str1); //获得原文的字节 byte[] byte2 = Des3EncodeECB(key, null, byte1); //已经加密过的字节 string str2 = Convert.ToBase64String(byte2); //将字节转换为 Base64位的编码 return str2; } #endregion #region ECB模式解密(key已经设置好) public static string DecodeECB(string old) { string keyWord = "youjiao2013_fromc#tojava"; return DecodeECB(old, keyWord); } #endregion #region ECB模式解密(自己设置KeyWord,注意key必须是24位的,不然java那边加密会显示长度不够) public static string DecodeECB(string old, string keyWord) { Encoding utf8 = Encoding.UTF8; byte[] key = utf8.GetBytes(keyWord); //加密的密钥 string strJiaMi = old; //需要解密的的密码 byte[] alreadyEnCodeByte = Convert.FromBase64String(strJiaMi); //从Base64位转换为字节 byte[] toDecodeByte = Des3.Des3DecodeECB(key, null, alreadyEnCodeByte); //解密 //将解密后的字节，转换成string字符串 //(注意，如果解密出来的字符串的长度不是8的倍数，则会自动在后面补\0多次，例如解密出来是abcde,长度为5,则会变成 abc\0\0\0\0\0 加多3次) string strShow = Encoding.Default.GetString(toDecodeByte); strShow = strShow.Replace("\0", ""); return strShow; } #endregion #region 测试 public static void MyTest() { Encoding utf8 = Encoding.UTF8; byte[] key = Encoding.Default.GetBytes("youjiao2013_fromc#tojava"); //---- 加密 string str1 = "abc"; //准备要加密的原文 byte[] byte1 = utf8.GetBytes(str1); //获得原文的字节 byte[] byte2 = Des3EncodeECB(key, null, byte1); //已经加密过的字节 string str2 = Convert.ToBase64String(byte2); //将字节转换为 Base64位的编码 Console.WriteLine(str2); //Pv8WLS7RSYRD8ushCAH/Zg== //--- 解密 string strJiaMi = "0TvZFgRLf5s="; //需要解密的的密码 byte[] alreadyEnCodeByte = Convert.FromBase64String(strJiaMi); //从Base64位转换为字节 byte[] toDecodeByte = Des3DecodeECB(key, null, alreadyEnCodeByte); //解密 //将解密后的字节，转换成string字符串 //(注意，如果解密出来的字符串的长度不是8的倍数，则会自动在后面补\0多次，例如解密出来是abcde,长度为5,则会变成 abc\0\0\0\0\0 加多3次) string strShow = Encoding.Default.GetString(toDecodeByte); strShow = strShow.Replace("\0", ""); Console.WriteLine(strShow); Console.ReadKey(); } /// 类测试 /// /// private static void Test() { Encoding utf8 = Encoding.UTF8; //key为abcdefghijklmnopqrstuvwx的Base64编码 byte[] key = Convert.FromBase64String("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"); byte[] iv = new byte[] {1, 2, 3, 4, 5, 6, 7, 8}; //当模式为ECB时，IV无用 byte[] data = utf8.GetBytes("中国ABCabc123"); Console.WriteLine("ECB模式:"); byte[] str1 = Des3EncodeECB(key, iv, data); byte[] str2 = Des3DecodeECB(key, iv, str1); Console.WriteLine(Convert.ToBase64String(str1)); Console.WriteLine(Encoding.UTF8.GetString(str2)); Console.WriteLine(); Console.WriteLine("CBC模式:"); byte[] str3 = Des3EncodeCBC(key, iv, data); byte[] str4 = Des3DecodeCBC(key, iv, str3); Console.WriteLine(Convert.ToBase64String(str3)); Console.WriteLine(utf8.GetString(str4)); Console.WriteLine(); } #endregion } #endregion
Des3Encrypt加密解密import java.security.Key;import javax.crypto.Cipher;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESedeKeySpec;import javax.crypto.spec.IvParameterSpec;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class Des3 { public static void main(String[] args) throws Exception { byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"); byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 }; byte[] data="中国ABCabc123".getBytes("UTF-8"); System.out.println("ECB加密解密"); byte[] str3 = des3EncodeECB(key,data ); byte[] str4 = ees3DecodeECB(key, str3); System.out.println(new BASE64Encoder().encode(str3)); System.out.println(new String(str4, "UTF-8")); System.out.println(); System.out.println("CBC加密解密"); byte[] str5 = des3EncodeCBC(key, keyiv, data); byte[] str6 = des3DecodeCBC(key, keyiv, str5); System.out.println(new BASE64Encoder().encode(str5)); System.out.println(new String(str6, "UTF-8")); } /** * ECB加密,不要IV * @param key 密钥 * @param data 明文 * @return Base64编码的密文 * @throws Exception */ public static byte[] des3EncodeECB(byte[] key, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding"); cipher.init(Cipher.ENCRYPT_MODE, deskey); byte[] bOut = cipher.doFinal(data); return bOut; } /** * ECB解密,不要IV * @param key 密钥 * @param data Base64编码的密文 * @return 明文 * @throws Exception */ public static byte[] ees3DecodeECB(byte[] key, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, deskey); byte[] bOut = cipher.doFinal(data); return bOut; } /** * CBC加密 * @param key 密钥 * @param keyiv IV * @param data 明文 * @return Base64编码的密文 * @throws Exception */ public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding"); IvParameterSpec ips = new IvParameterSpec(keyiv); cipher.init(Cipher.ENCRYPT_MODE, deskey, ips); byte[] bOut = cipher.doFinal(data); return bOut; } /** * CBC解密 * @param key 密钥 * @param keyiv IV * @param data Base64编码的密文 * @return 明文 * @throws Exception */ public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data) throws Exception { Key deskey = null; DESedeKeySpec spec = new DESedeKeySpec(key); SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede"); deskey = keyfactory.generateSecret(spec); Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding"); IvParameterSpec ips = new IvParameterSpec(keyiv); cipher.init(Cipher.DECRYPT_MODE, deskey, ips); byte[] bOut = cipher.doFinal(data); return bOut; }}